Front bumper system

ABSTRACT

A lightweight high-strength front bumper for a vehicle, having an elongated substantially hollow structure, with a protruding tubular strengthening member attached near the front face and also near the back face, so as to strengthen the spaced apart relation of the front face and back face. The bumper is typically substantially made of 6061 T6 aluminum or another high-strength, lightweight metal or allow with good workability. The bumper advantageously includes one or more storage compartments in the elongated structure.

CROSS REFERENCE To RELATED APPLICATION

Reference is made to and priority claimed from U.S. provisionalapplication Ser. No. 60/690,565 filed 13 Jun. 2005.

BACKGROUND OF THE INVENTION

1. Technical Field

The present invention pertains to the field of accessories forautomotive vehicles. More particularly, the present invention pertainsto a front bumper for an automotive vehicle.

2. Discussion of Related Art

An ordinary front bumper is a shield against low-speed collisions,typically made of steel, aluminum, rubber, or plastic, and mounted onthe front of a vehicle. When a low-speed collision occurs, thebumper—along with its attachment to the vehicle—absorbs the shock toprevent or reduce damage to the vehicle. 49 CFR Part 581, entitled “Thebumper standard” and called simply “the standard” hereinafter,prescribes performance requirements for passenger cars in low-speedfront (and rear) collisions. It applies to front (and rear) bumpers onpassenger cars, and is aimed at preventing damage to the car body andsafety related equipment at barrier impact speeds of 2½ mph across thefull width and 1½ mph on the corners. This is equivalent to a 5 mphcrash into a parked vehicle of the same weight. The standard requiresprotection in the region 16 to 20 inches above the road surface, and themanufacturer can provide the protection by any means it wants. Forexample, some vehicles do not have a solid bumper across the vehicle,but meet the standard by strategically placed bumper guards and cornerguards. Some bumpers use energy absorbers or brackets and others aremade with a foam cushioning material. Ordinary front (and rear) bumpersare not designed to be structural components that would significantlycontribute to vehicle crashworthiness.

At this time, the U.S. military is involved in conflicts of a sortsometimes called urban warfare. The HMMWV (High Mobility Multi-purposeWheeled Vehicle) is often used on patrol in such conflicts. As provided,the HMMWV is susceptible to being disabled by an ordinary passengervehicle ramming into the front end of the HMMWV. The HMMWV as usuallyprovided does not even have a front bumper. Also, the HMMWV is notusually armored, and when disabled, the crew is usually at a greatdisadvantage because they are usually outnumbered, surrounded, andwithout cover.

In addition, a strategy used in attacking a HMMWV on patrol is to placea wrecked or disabled junk vehicle in the roadway at a place where thereis no way for the HMMWV to get around the junk vehicle. Crew membersthen would sometimes have to exit the HMMWV and push the junk vehicleout of the way, and would be shot at while trying to get the junkvehicle out of the way.

What is therefore needed is a highly protective front bumper for theHMMWV and other vehicles used in such conflicts.

The prior art does provide highly protective front bumpers for suchapplications, but these are usually quite heavy, typically severalhundred pounds, because of being made of steel. While there areadvantages in having a steel front bumper, the HMMWV was not designed tomaneuver with such a large amount of weight attached to the front.

In addition, the HMMWV is not a large vehicle, and is sometimes taken onextended duration patrols, and must then accommodate a large amount ofsupplies and equipment and several crew members. Storage space istherefore at a premium.

Thus, it would be advantageous to have a front bumper system that is notonly high strength but also lightweight, and further, ideally, alsoincludes some additional storage capacity.

DISCLOSURE OF INVENTION

Accordingly, in a first aspect of the invention, a vehicle bumper systemis provided, comprising: an elongated substantially hollow structure,for mounting to the front of a vehicle so as to have a front facesubstantially parallel to the front surface of the vehicle and facingoutward away from the vehicle, a back face in spaced apart relation withthe front face and also substantially parallel to the front surface ofthe vehicle but facing toward the vehicle, and also a top substantiallyplanar face and a bottom substantially planar face, wherein theelongated structure has a center portion and adjacent side portionsformed from the front face and back face and also formed from the topface and bottom face, and the side portions taper down substantially infront to back width measured from the front face to the back face in adirection away from the center portion; and a protruding tubularstrengthening member attached to the top face near the front face andalso near the back face, so as to strengthen the spaced apart relationof the front face and back face; wherein at least the elongatedstructure is made from a high-strength lightweight metal or alloy, suchas 6061 T6 aluminum.

In accord with the first aspect of the invention, the elongatedstructure may comprise a storage compartment.

Also in accord with the first aspect of the invention, the top face onat least one side portion may include a panel in hinged attachment tothe hollow structure so as to allow pivoting the panel about the hingein an opening and closing motion, thereby providing an enclosed storagecompartment in the at least one side portion.

Also in accord with the first aspect of the invention, the vehiclebumper system may further comprise a plurality of bumper guard membersdistributed across the front face, and attached to and protruding fromthe front face.

Still also in accord with the first aspect of the invention, the centerportion may have portals in the front face and back face, and may beopen on the top face, for allowing the bumper system to fit over a winchon the front of the vehicle by mounting the bumper system so that thewinch passes through the portal on the back face, with the steel cablesof the winch passing through the portal in the front face.

A bumper according to the invention has been made for use with a HMMWV.It weighs less than one hundred pounds, and is able to move a 1500-poundjunk vehicle out of its way without having to slow down below 30 mph.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and advantages of the inventionwill become apparent from a consideration of the subsequent detaileddescription presented in connection with accompanying drawings, inwhich:

FIG. 1 is a perspective view of a bumper according to the invention.

FIGS. 2-6 are, respectively, a side view (FIG. 2), a front view (FIG.3), a top view (FIG. 4), a back view (FIG. 5), and a bottom view (FIG.6) of the bumper of FIG. 1.

BEST MODE FOR CARRYING OUT THE INVENTION

Referring now to FIG. 1 (perspective view) and FIG. 4 (front view), afront bumper system 10 according to the invention has an elongatedhollow main member 11 having a front face ha and a back face 11 b heldin spaced apart relation with the front face near the center of thebumper by member 15, and a top face 11 c with a protruding tubularstrengthening member 12 attached to the top face near the front face andalso near the back face, for strengthening the spaced apart relation ofthe front face and back face. In addition, bumper guard elements 14 aredistributed across the front face, and are attached to and protrude fromthe front face. The bumper guard elements 14 advantageously have areplaceable rubber facing 14 a. The main member 11 has a center portion101 and adjacent side portions 102, and the side portions taper downsubstantially in front to back width in a direction away from the centerportion, so as to be narrower in front to back width near the two endsof the main member. In other words, the side portions along the frontface tapers rearwardly and the side portions along the back face tapersforwardly, but not necessarily touching one another. Using tapered sideportions means the vehicle is lighter, and also easier to handle, i.e.less clearance needed for turning in tight spaces. The bumper system 10is advantageously made substantially from 6061 T6 aluminum or anotherhigh-strength lightweight metal or alloy. The 6061 T6 aluminum has goodworkability; it is easy to weld (with proper equipment), drill, machine,saw, and punch. Alternatives include titanium metal, titanium alloys,and beryllium-aluminum alloys .

Referring still to FIGS. 1 and 4, a portion 19 of the top face on atleast one side portion 102 is advantageously hinged to the back face 11b via one or more hinges 17 so as to allow pivoting the portion aboutthe hinge in an opening and closing motion, and a latch 18 for latchingand unlatching the portion 19 to and from the front face 11 a. Thus, anenclosed storage compartment is provided in at least one side portion.

Still referring to FIGS. 1 and 4, and now also to FIG. 3 (front) andFIG. 5 (back), the center portion 101 has a portal 101 a in the frontface and a portal 101 b in the back face, and is open on the top face.This allows the bumper system to fit over a winch on the front of thevehicle, by mounting the bumper system so that the winch passes throughthe portal 101 b on the back face, with the steel cables of the winchpassing through the portal 101 a in the front face.

Referring now to FIG. 2 (side) and to FIG. 5 (back), the bumper systemhas a coupler 16 for attaching the bumper to the front of the vehicle.

It is to be understood that the above-described arrangements are onlyillustrative of the application of the principles of the presentinvention. Numerous modifications and alternative arrangements may bedevised by those skilled in the art without departing from the scope ofthe present invention, and the appended claims are intended to coversuch modifications and arrangements.

1. A vehicle bumper system, comprising: an elongated substantiallyhollow structure, for mounting to the front of a vehicle so as to have afront face substantially parallel to the front surface of the vehicleand facing outward away from the vehicle, a back face everywhere inspaced apart relation with the front face and also substantiallyparallel to the front surface of the vehicle but facing toward thevehicle, and also a top substantially planar face and a bottomsubstantially planar face, wherein the elongated structure has a centerportion and adjacent side portions formed from the front face and backface and also formed from the top face and bottom face, and the sideportions taper down substantially in front to back width measured fromthe front face to the back face in a direction away from the centerportion; and a protruding tubular strengthening member attached to thetop face near the front face and also near the back face of the centerportion, so as to strengthen the spaced apart relation of the front faceand back face; wherein at least the elongated structure is made ahigh-strength lightweight metal or alloy.
 2. A vehicle bumper system asin claim 1, wherein the high-strength lightweight metal or alloy is 6061T6 aluminum.
 3. A vehicle bumper system as in claim 1, wherein theelongated structure comprises a storage compartment.
 4. A vehicle bumpersystem as in claim 1, wherein the top face on at least one side portionincludes a panel in hinged attachment to the hollow structure so as toallow pivoting the panel about the hinge in an opening and closingmotion, thereby providing an enclosed storage compartment in the atleast one side portion.
 5. A vehicle bumper system as in claim 1,further comprising a plurality of bumper guard members distributedacross the front face, and attached to and protruding from the frontface.
 6. A vehicle bumper system as in claim 1, wherein the centerportion has portals in the front face and back face, and is open on thetop face, for allowing the bumper system to fit over a winch on thefront of the vehicle by mounting the bumper system so that the winchpasses through the portal on the back face, with the steel cables of thewinch passing through the portal in the front face.